BIOL 150B Lecture Notes - Lecture 6: Statistical Hypothesis Testing, Surface Tension, Dehydration Reaction
19 Feb 2018
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Document Summary
Evolution has shaped and will shape everything in science. The cell is the fundamental unit of life. Cells are the level at which the properties of life emerge. Unity of life is based on genetic code. Make observations - form hypothesis - test predictions. Using biological technology would be an example of testing a theory. Chemicals are stuff that make up our body, Matter occupies space and has mass weight. An element is a substance that can"t be broken down to other substances. A compound is combined of two or more elements. The main four elements of life are. An atom is the smallest unit of matter. An atom is composed of protons, neutrons, and electrons. Because protons are positive and electrons are negative they magnetically hold them in place. Isotopes are uneven protons and neutrons that are unstable. Electrons have 1, 2 or 3 shells. A valence shell is the outermost shell.
